Method of preparing wire for drawing



UNlTED STATES PATENT OFFICE.

CHARLES H. MORGAN, .OF WORCESTER, MASSACHUSETTS.

SPECIFICATION formingpart of Letters Patent No. 229,836, dated July 13, 1880.

Application filed October 9, 1878. I

To all whom 'bt may concern.-

Be it known that I, CHARLES H. MORGAN, of the city and county of Worcester, and Commonwealth of Massachusetts, have invented a certain new and useful Improvement in the Process of Preparing Wire for Drawing and I do hereby declare that the following is afull, clear, and exact description of my said invention.

As my invention is an improvement upon the processesof wire-drawing for which Letters Patent were granted to Kenerson and Morgan, May 7, 1878, No. 203,346, it will be unnecessary. to describe in detail the process for which said Letters Patentwere granted, and therefore I shall confine myself to a description of my improvement upon said patented invention, and which improvement consists of coating or coveringthe wire, preparatory to being drawn with a hot or warm solution of salt or other substance possessing substantially the same quality and producing substantially the same result upon the wire, instead of covering or coating it with a cool solution, as was the case in the process patented to said Kenerson and Morgan, before alluded to; and those skilled in the art to which my invention belongs will readily appreciate the great practical advantages'which necessarily flow or result therefrom.

By the old' or Keuerson and Morgan process it was necessary to have a heated room in which to dry the wire as soon as the coating had been applied, and unless the drying operationwas carried on very efi'ectually and carefully there were a liability and danger of some portions of the coil of the wire (when coated in this form) not being sufficiently dried to prevent rust or oxidation, whereas by my improvement the wire is heated so much by the operation that its coating is quickly dried by the heat incident to the coating operation itself.

The usual mode which I recommend for coating or covering coils of wire is to have a bath containing a considerable quantity of the solution, and after the same has been properly heated or brought to the desired temperature coils of wire are immersed in such bath of hot solution of salt, and then, as the coils or coil, as the case may be, are or is lifted or raised from the bath, the heat imparted to the wire while in the bath, acting in combination with the heat of the coating itself, causes such an evaporation of the particles or liquid portions of the solution as to leave the wire in a dry and proper state in a few minutes after the coating has been applied, thereby insuring a uniformity throughout the entire coil or coils, so far as the drying process is concerned, but also insures a uniformity in the coating itself, and consequently insures a better and more uniform quality of wire after it has been drawn.

The fact that the solution will stand a higher degree of heat before it boils than fresh water enables me to take advantage of this fact under certain circumstances, particularly in cool or cold weather, to impart to the wire quite a high degree of heat, as those skilled in the art will fully understand, whereby, after the wire is removed" from the bath, the heated condition of the wire will cause the inner surface of the coating to quickly dry and crystallize, thereby forming a very close and adherent connection with the fibers and surface of the wire to be drawn, in addition to preventing any corrosive or rusting operation or process taking place during the subsequent drying or crystallization of the salt solution by which the wire is covered.

It will thus be seen that by'my invention or improvement in the patented process of Kenerson and Morgan very valuable practical results are obtained.

Having described my improved mode or process of wire-drawing, what I claim therein as new and of my invention, and desire to secure by Letters Patent, is

The improved method of preparing Wire for drawing, consisting in immersing the wire in a hot bath composed of a solution of salt, thereby raising the temperature of the wire, substantiallyas and for the purpose set forth.

CHAS. H. MORGAN.

Witnesses:

Tnos. H. DODGE, FRANK F. BULLARD. 

